Silas tuttle



No. slams. Patented 1an. 3|, 1899.

s. TuTTLE.

HUT AIB REGISTER 0R VENTILATOR.

(Application led Apr. 21, 1898.)

(Nn Model.)

HMM Hw /NVENTOH A TTOHNE Y.

TN: cams versus co. Marwua-.. wAsHmm'oN o c UNITED STATES PATENT OFFICE.i

SILAS TUTTLE, OF NEW YORK, N. Y.

HOT-AIR REGISTER OR VENTILATOR.

SPECIFICATION formingpart of Letters Patent No. 618,589, dated January31, 1899.

Application filed .April 2l, 18.98. Serial No. 678,344. (No model.)

To all whom it may concer-7c:

Be it known that I, SILAS TUTTLE, of New York, (Brooklym) Kings county,New York, have invented a new and useful Improvement in Hot-AirRegisters or ventilators, of which the following is a specification.

My invention relates to that class of registers which are usuallyprovided with a supporting-frame, pivoted fans or valves, and an outsidegrating, together with an operating device for moving the fan into openor closed position.

My invention consists more particularly in the construction of theoperating device for the fans and the combination of the fans therewithand in the means for locking said fans in closed position.

In the accompanying drawings, Figure l is a front view of the registerwith a portion of the grating removed, so as to exhibit the operatingparts. Figs. 2 and 3 are cross-sections on the line 2 2 of Fig. l. Fig.4 is a similar cross-section in part and designed more particularly toshow the locking action of the sliding bar.

Similar numbers of reference indicate like parts. Y

l is the register frame or box.

2 is the grating, which is secured thereto in any suitable manner, as bybolts entering openings 3 in the solid corners of the frame'. The fansor slats 4 are here shown as three in number; but of course this numbermay be varied at will. Upon the transverse edge of each fan there is apivot-pin 5 and also a stud-pin 6, which may project in the samedirection as the pivot-pin 5 and may be supported by an offset 7, which,if the fan is of cast metal, may be cast integrally with the fan. So,also, the pivot-pins 5 may be integrally cast with the fan. I have shownthe pins 6 here projecting from an. oset 7 but it is to be understoodthat this offset is not essential to my construction, inasmuch as thepin may project from the fan-body itself. The pivot-pins 5 of the fansare received at one end of the frame in simple sockets in theframe-wall. This wall and the sockets are not shown. At the other endofthe frame the pivot-pins are received in half-bearings 8, formed in aledge 9 on the rear side of the frame. The said pins are retained insaid half-bearings by a bar 10, which is also provided withhalf-bearings ll, which when the bar is secured in place, as shown inFig. l, registers with half-bearings 8 and so completes a circularbearing or socket into which the pivot-pins 5 are received. The bar IOis secured to the frame-wall by any suitable means-as, for example, abolt, (indicated by dotted lines at l2 in Fig. l.) By removing this boltthe bar 10 can be taken out, the half-bearings 8 and l1 separated, andthe fans thus easily withdrawn from the frame.

Upon the upper side of the bar lO are lugs, one of which is shown at 13.Resting upon these lugs and upon the upper surface of the half-bearings11 is a sliding bar 14. In this bar are curved slots l5. In these slotsthe stud-pins 6 enter. On the upper side of the bar 14 are stops 16, andon its forward side is a projection 17, which passes through an openingin the grating and by means of which the bar 14 can be moved to and frolongitudinally, or, in other words, from right to left of the drawing.

A leaf-spring 18 bears upon a shoulder of the projection 17 and forcesthe bar 14 rearwardly, so that its rear side rests against thefan-pivots 5.

The operation of the device is as follows: Assuming the parts to be inthe position shown in Fig. 3,with the fans open, sliding'bar 14 is movedto the right of the drawing by means of the arm 17. The stud-pins 6 ofthe fans are now acted upon by the curved edges of the slot l5, and eachstud-pin is caused to describe a circle, as indicated by the curvedarrows 19 in Fig. 3,while the longitudinal edges of the fan describe acircle represented by the curved arrows 2O in the same figure. When thefans assume their closed position, as represented in Fig. 4, thestud-pins 6 have not reached the left-hand ends of the slots l5, andfurther movement of the bar 14 now serves 'to lock the fans in closedpositionthat is to say, if the bar 14 be moved still farther in thedirection of the arrow 21in Fig. 4 and into the position represented bydotted lines in said figure, then, as is shown by said dotted lines, thestud-pins 6 will have come into a substantially straight portion 23 ofthe slots, and consequently any force tending to bring the fan back toan open position,

IOO

exerted directly on the lian itself, Will be opposed by the stud-pinbearing against the straight edges of the slot, and as suoli anapplication of force to the sliding bar Will obviously not move the barit follows, therefore, that the fans become locked in closed position.This is of especial advantage in registers of this kind which may beused for ventilators, in which case the air moves inwardly through thegrating, as well as hot-air registers, in which case the hot air comesout- Wardly through the grating. If the fans Were not capable of beinglocked in closed position, a strong inward draft would tend to openthem.

The filial position of the fans and of the stud-pins in the slots is asrepresented in Fig. 2, the bar 14 then having been moved to its extremelimit to the right of the drawing. To open the fans again, it is ofcourse only necessary to move the bar 14. in the direction of the arrow22 of Fig. 2. The bar then slides over the stud-pins 6 for a shortdistance before the curved edges of the slots act upon said pins to movethem in a reverse direction to that shown in Fig. 3 and so to rotate thefans into open position until said fans strike the fixed stops 16 of thebar 14..

The special advantages of this construction are, iirst, its simplicityand fewness of parts; second, its ease and certainty of operation, and,third, the automatic locking of the fan in closed position by theoperating device itself without the addition of any extraneous means forthat purpose. As to the first point it will be noted that the wholeoperating device is nothing more than a single sliding bar in which areformed the slots which engage with the stud-pins of the fans. Inasmuchas the fans are locked, it is no longer necessary to arrange the partsof the operating device in close frictional contact, so as to hold thefans in closed position by friction. Therefore the entire device is veryeasy of operation, and, finally, the same movement which closes the fanspractically locks them. The hand almost naturally in pushingover theprojection 17 to make the fans shut carries it onward a little fartherand so locks them.

Similarly, in opening the fans the first movement of the bar is tounlock them before it begins to open them.

I claim- 1. In an air register or ventilator, a pivoted fan, a xed pinprojecting from an end thereof, and a sliding bar having a slot adaptedto receive said pin; the said slot being formed, and

when said bar is moved acting, to turn said fan on its pivot, and also,by its engagement with said pin, to lock said fan in closed position,substantially as described.

2. In an air register or ventilator, a pivoted fan, a fixed pinprojecting from an end thereof, and a sliding bar having a slot adaptedto receive said pin and placed and operating between said fan and theregister-face; the said slot being formed, and when said bar is movedacting, to turn said fan on its pivot, and also, by its engagement withsaid pin, to lock said fan in closed position, substantially asdescribed.

3. In an air register or ventilator, a pivoted fan, a iixed pin thereonand a movable bar having a slot receiving said pin, the said slot havinga curved portion and a straight portion; whereby when said bar is movedthe curved portion of said slot acting on said fixed pin operates toturn said fan, and the straight portion of said slot acting on saidfixed pin locks said fan in definite position, substantially asdescribed.

4. In an air register or ventilator, a pivoted fan, a fixed pin thereon,and a sliding bar having a slot receiving said pin, the said slot havinga curved portion and a straight portion extended in the line of movementof said bar; whereby when said bar is moved to turn said fan from opento closed position, the curved portion of said slot irst acts on saidpin to close said fan, and thereafter further movement of said bar inthe same direction carries the straight portion of said slot over saidpin and thereby locks said fan, substantially as described.

SILAS TUTTLE.

Witnesses:

H. R. MOLLER, 1".. A. VAN WART.

